Amy Held

It's the Cubs, Bulls and Bears that usually get Chicagoans talking, but this week the animal that has residents snapping to attention is a real live alligator cruising through a lagoon in the city.

The alligator, estimated to be between 4 and 5 feet long, was spotted Tuesday in the unlikely locale of Humboldt Park on the city's West Side.

Surprised parkgoers called 911, and responding officers brought in animal control.

Facing a backlash, Home Depot sought to distance itself from billionaire co-founder Bernie Marcus after he pledged to back President Trump's bid for re-election in 2020.

Calls to boycott the retailer took off this week on social media as news spread that Marcus told The Atlanta Journal-Constitution late last month that he plans to support Trump's bid for another term.

Updated at 10:35 a.m. ET

Kim Darroch, the British ambassador to the U.S., has announced his resignation days after leaked cables revealed his sharp criticism of the Trump administration and the U.S. president responded by saying he will "no longer deal with him."

Updated at 4:58 p.m. ET

The Vatican department charged with overseeing Catholic education released an extensive document Monday decrying what it calls a "crisis" on whether gender can be an individual choice rather than being set by God or biology.

The document describes a culture-wide "disorientation" that serves to "cancel out" the natural difference between man and woman, as well as "destabilise the family as an institution."

Los Angeles County's Santa Anita Park is standing firm against calls to cancel the rest of its racing season after the deaths of two more horses over the weekend, bringing the number of horses that have died at the track since December to 29.

In a highly unusual move Saturday, the California Horse Racing Board asked the park to scuttle competition for the seven remaining race days to "provide the industry more time to fully implement announced safety initiatives and perhaps additional ones."

Facebook says it removed 3.39 billion fake accounts from October to March. That's twice the number of fraudulent accounts deleted in the previous six-month period.

Updated at 5:20 p.m. ET

A day after flames leaped through Notre Dame Cathedral in Paris sparking fears the beloved building could be consumed, Parisians sang and prayed in processions through the streets and held vigils Tuesday evening close to the church constructed more than eight centuries ago.

The cathedral stood blackened with much of its roof gone, its spire collapsed and charred rubble inside, but it remained standing, its main structure and two towers spared.

Updated on Tuesday at 5:25 a.m. ET

Notre Dame Cathedral, one of the world's most famous churches, erupted in flames Monday in Paris, losing its spire but remaining otherwise largely intact after firefighters worked through the night to contain the fire.

Updated at 12:30 p.m. ET

The U.S. Strategic Command is charged with controlling the nation's nuclear operations, but conceded it missed the mark with a New Year's Eve tweet comparing the famed ball drop to a B-2 bomber dropping weapons.

"TimesSquare tradition rings in the #NewYear by dropping the big ball...if ever needed, we are #ready to drop something much, much bigger," read the now-deleted tweet from Stratcom's official account.